/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/IDatasmithSceneElements.h
Set emissive material on this light
void SetLightFunctionMaterial ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IDatasmithMaterialIDElement](API\Runtime\DatasmithCore\IDatasmithMaterialIDElement) > & InMaterial )